diff --git a/src/GraphQL.DI/DIObjectGraphBase.cs b/src/GraphQL.DI/DIObjectGraphBase.cs
index 155467e..0075362 100644
--- a/src/GraphQL.DI/DIObjectGraphBase.cs
+++ b/src/GraphQL.DI/DIObjectGraphBase.cs
@@ -5,7 +5,7 @@ namespace GraphQL.DI
     /// used if the <see cref="IResolveFieldContext.Source"/> type is <see cref="object"/>.
     /// </summary>
     //this class is a placeholder for future support of properties or methods on the base class
-    public class DIObjectGraphBase<TSource>
+    public class DIObjectGraphBase<TSource> : IDIObjectGraphBase<TSource>
     {
         //this would be an ideal spot to put public readonly fields for the resolving query, such as Schema, Metrics, Executor, and so on, rather than being inside the ResolveFieldContext instance.
         //this could only contain fields that are not unique to a resolving field (such as Source), so as to not break multithreading support
@@ -16,7 +16,7 @@ public class DIObjectGraphBase<TSource>
     /// This is a required base type of all DI-created graph types. <see cref="DIObjectGraphBase{TSource}"/> may be
     /// used when the <see cref="IResolveFieldContext.Source"/> type is not <see cref="object"/>.
     /// </summary>
-    public class DIObjectGraphBase : DIObjectGraphBase<object>
+    public class DIObjectGraphBase : DIObjectGraphBase<object>, IDIObjectGraphBase<object>
     {
     }
 }
diff --git a/src/GraphQL.DI/DIObjectGraphType.cs b/src/GraphQL.DI/DIObjectGraphType.cs
index f9ac359..9e8073e 100644
--- a/src/GraphQL.DI/DIObjectGraphType.cs
+++ b/src/GraphQL.DI/DIObjectGraphType.cs
@@ -20,12 +20,12 @@ namespace GraphQL.DI
     /// Wraps a <see cref="DIObjectGraphBase"/> graph type for use with GraphQL. This class should be registered as a singleton
     /// within your dependency injection provider.
     /// </summary>
-    public class DIObjectGraphType<TDIGraph> : DIObjectGraphType<TDIGraph, object> where TDIGraph : DIObjectGraphBase<object> { }
+    public class DIObjectGraphType<TDIGraph> : DIObjectGraphType<TDIGraph, object> where TDIGraph : IDIObjectGraphBase<object> { }
     /// <summary>
     /// Wraps a <see cref="DIObjectGraphBase{TSource}"/> graph type for use with GraphQL. This class should be registered as a singleton
     /// within your dependency injection provider.
     /// </summary>
-    public class DIObjectGraphType<TDIGraph, TSource> : ObjectGraphType<TSource> where TDIGraph : DIObjectGraphBase<TSource>
+    public class DIObjectGraphType<TDIGraph, TSource> : ObjectGraphType<TSource> where TDIGraph : IDIObjectGraphBase<TSource>
     {
         /// <summary>
         /// Initializes a new instance, configuring the <see cref="GraphType.Name"/>, <see cref="GraphType.Description"/>,
diff --git a/src/GraphQL.DI/IDIObjectGraphBase.cs b/src/GraphQL.DI/IDIObjectGraphBase.cs
new file mode 100644
index 0000000..ee95ffa
--- /dev/null
+++ b/src/GraphQL.DI/IDIObjectGraphBase.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace GraphQL.DI
+{
+    public interface IDIObjectGraphBase
+    {
+    }
+
+    public interface IDIObjectGraphBase<TSource> : IDIObjectGraphBase
+    {
+    }
+}